Rhynchonellata - Terebratulida - Cryptonellidae

Alternative spelling: Petria

Parent taxon: Cryptonellinae according to A. Williams et al. 2006

See also Sepkoski 2002

Sister taxa: Booralia, Cryptonella, Dielasmella, Gacina, Heterelasma, Texarina

Subtaxa: none

Ecology: stationary low-level epifaunal suspension feeder

Distribution: found only at Pamunkey River (H76-64-8) (Eocene of Virginia)

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Specimen images are retrieved through the ePANDDA API.